Granted Patent
Utility
US 4,604,550 · App. 06/667,043
Display tube with terbium-activated blue-luminescing phosphor screen
Inventors:
Jan L. van Koesveld, Roelof Egbert Schuil
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Nov 1, 1984
Inventors
Jan L. van Koesveld
Roelof Egbert Schuil
Assignee (at issue)
U.S. Philips Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.